Improvement in machines for making cop-tubes



Y1.*F. WILKINSON. Machines for Making Cop-Tubes.

N0.l57, 953, i Patented060.22.1874.

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UNITED STATES PATENT EEICE.

JOHN F. WILKINSON, OF PAWTUOKET, RHODE ISLAND, ASSIGNOR OF ONE- HALF HIS RIGHT TO WILLIAM M. MAROHANT, OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR MAKING COP-TUBES.

Specification forming part of Letters Patent No. 157,953., dated December 22, 1874 application filed September 19, 1874.

The accompanying drawing is hereby made a part of this specification, similar letters of reference indicating corresponding parts.

Figure 1 of said drawing is a top view of the entire device, and Fig. 2 is an end view thereof, showing those parts in which the tube `is made.

A is the base of the machine. B B and Z are the supports for the gearing and other running parts of said device. O is the roll of paper from which the coptubes are made, the line O indicating the passage of the paper upward and into the gum-box. D shows said gum-box, in which one surface of the paper is gummed while passing through it.A E is a 1ever, operated at one end by the automatic gear hereinafter described, the other end be-l ing attached to a movable knife, which, at the proper time, and in the manner hereinafter described, descends and cuts the paper into the desired lengths. F indicates a feed-rack, (somewhat hidden in the drawing by the contiguous parts,) by which, and in combination with G, an endless apron, the severed strips of paper are carried to and introduced between the end of the spindle and calenderingrolls, hereinafter described. H shows said spindle, and I K L, respectively, an upper, rear, and under calendering-roll, the end of the spindle H revolving between them. M is a shoe supporting the front of the end of the spindle, and gently pressing upon the tube while the same is being made. N O l? are, respectively, an upper, rear, and under spiral spring, governing, respectively, the action upon the forming-tube of the connected calenderingrolls I K L. R is an automatic gear, which operates the entire device, and which has the cam a attached to one of its sides, and the catch or projection e attached to the opposite side. S is the drivingpulley, and T the central shaft. UV W show the gearing, which, receiving motion at regular intervals from said automatic gear, operate the distributing-rolls in the gum-box D. Y is a shoulder on the spindle H, which is operated upon by the cam a at each revolution, in the manner and for the purposes hereinafter described. f is a set of gearing which transmits motion from the automatic gear to the spindle. g g are gearing connected with said automatic gear R, and which communicate motion to the'feed-rack F. t is a gear, through which motion is communicated to the endless apron Gr. A weight is attached to the end h of said spindle by means of a cord, which passes under the bearing, and over a pulley placed at t. rI`he object of said weight is to cause the spindle to return to its place after it has thrown off the completed tube, as hereinafter described. Instead of said weight a spring may be used `for the same purpose. The end of said spindle, surrounded by the calendering-rolls aforesaid, I prefer to ute or groove lengthwise, to the end that air may be admitted to the interior of the tube while the latter is being made, and for the further purpose of facilitating the removal of the completed tube from the spindle.

rlhe mode of operating the device above set forth is substantially as follows: The paper from the roll C passes up into and through the gum-box D, as seen in Fig. 2, in which box it has its upper surface evenly gummed; thence it passes under the knife or shears attached to the lever E, and ontothe endless and moving apron G, on which it is carried under the feed-rack F to theI spindle H. Here the gummed paper is received on and is wound around the fluted or grooved end of said spindle, the calendering-rolls I K L pressing the coils of paper closely together during the formative process of the tube. The springs N O P regulate the amount of the pressure of said calendering-rolls upon the growing tube. At the time when there has passed under. the knife suficient paper to form a tube, the said knife, being depressed by the action of the catch e during the revolution of the automatic gear R, descends and severs the paper. By reason of intermittin g the gearing on the part It the revolution of the gearing U V W stops, and the supply of paper noW ceases until the severed strip hasbeen converted into a completed tube, when the gearing again connects, and another strip of paper is furnished and severed from the roll in the manner aforesaid. At the point when the severed strip has been entirely Wound around the grooved end of the spindle, thus completing the tube, the cam a impinges on the shoulder Y, and as the revolution of the part R continues the result is that the spindle H, bearing the finished tube, is carried or crowded outward. In this outward motion of said spindle the completed tube strikes against a shoulder, (seen at og) on the upper part ofthe support Z, when said tule is removed from or pushed ofi the end of the spindle, and said tube drops into a receptacle previously prepared for it. This occurs just as the end of the cam a passes the shoulder Y, and then by the action of the Weight attached to the end h of the spindle, as aforesaid, said spindle is immediately returned to its former place, the grooved end thereof ready to receive another strip of paper, at that instant introduced to it, as above mentioned.

An important feature of that part of the device in which the tube is formedto Wit, the K fluted or grooved end of the spindle H and the calendering-rolls I K L--is the relative size, as compared with each other, of the said parts H I K L. 'Ihe fluted end of the spindle is made somewhat larger than the rolls I K L, the result sought, and thereby attained, bein g that the gummed paper Will readily and invariably Wind around the spindle instead of the rolls, as the tendency of the paper is to followr the larger surface.

The distributing-rolls in the gum-box D do not materially difer from similar mechanism used for spreading printers ink, and for other similar purposes, and are not herein claimed as radically new; but

What I do claim as new, and Which I de-1 sire to secure by Letters Patent7 isl. rIhe automatic gear R, having the cam a and catch e, in combination With the spindle H and lever E, all constructed in the manner and used for the purposes substantially as described and shown.

2. The combination of the spindle H with thecalendering-rolls I K L and shoe M, all in. the manner and for theV purposes substantially as set forth.

JOHN Ii. WILKINSON.

Witnesses:

ISAAC SHovE, JOHN P. GREGORY 

